Synthesis and Structure of a Tetranuclear Nickel Complex of a 40-Membered Macrocyclic Octaamine-Tetrathiophenolate Ligand
نویسنده
چکیده
The syntheses and characterization of tetranuclear Ni complexes [(L2)Ni4][C104]4 (3) and [(L2)Ni4(NCS)4] (4) of a 40-membered macrocyclic octaamine-tetrathiophenolate ligand (L2)4are described. Single-crystal X-ray structure analysis of 4 reveals well-separated molecules of the tetranuclear isothiocyanate complex [(L2) N i 4(NCS)4]. The four Ni" centers are arranged in binuclear [N2N i(^2-SR)2NiN2(NCS)2] subunits containing distorted square-planar NiN2S2 and distorted octahedral NiN2S2(NCS)2 sites. The fact that the two isothiocyanate groups at the octahedral Ni site are in trans positions can be ascribed to the large ring size of the macrocycle.
منابع مشابه
Synthesis and Coordination Chemistry of Novel Binucleating Macrocyclic Ligands with Amine-thioether and Amine-thiophenolate Donor Functions
Z. Naturforsch. 56 b, 901-907 (2001); received June 5, 2001 Macrocyclic Ligands, Nitrogen, Sulfur The ability of the aromatic tetraaldehyde l,2-bis(4-rm-butyl-2,6-diformylphenylsulfanyl)ethane (1 ) to function as a precursor in the preparation of binucleating hexaamine-dithiolate lig ands has been investigated. Reductive amination of compound 1 with bis(aminoethyl)amine un der medium-dilution...
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